THz Spectral Splitters

Download THz Spectral Splitters Datasheet (PDF, 72 KB)

Tydex offers spectral splitters for applications where NIR and MIR radiation has to be reflected without transmission degradation in THz range.

NIR-THz spectral splitter is used for separation of pump radiation (centered in the wavelength range 790-800 nm) from THz radiation in Ti:Sapphire laser and MIR-THz  spectral splitter – for separation of pump radiation (9.6 μm and 10.6 μm) from THz radiation in THz laser optically pumped by CO2 -laser.

THz splitters
THz splitters


Common specification:



Splitter Type
NIR-THz spectral splitter MIR-THz spectral splitter
Material of substarate - HRZF-Si
- THz-grade crystal quartz
Dimensions tolerance, mm +/-0.25
Clear aperture, % 90
Surface quality, scr/dig 60/40
Surface accuracy, mm +/-0.01 deviation from ideal plane
Coating High-reflection dielectric coating (R>90%) @ 730-860 nm High-reflection dielectric coating (R>90%) @ 9-11µm 
Angle of incidence, arc. grad.  45

Typical reflection and transmission curves are shown below

Reflection spectra of NIR-THz splitter (two types of substrate).

Fig.1 Reflection of NIR-THz spectral splitter (two types of substrate).

Transmission spectra of NIR-THz splitter (two types of substrate).

Fig.2 Transmission  of NIR-THz spectral splitter (two types of substrate).

 

Reflection spectra of MIR-THz splitter (two types of substrate).

Fig.3 Reflection of MIR-THz spectral splitter (two types of substrate).

 Transmission spectra of MIR-THz splitter (two types of substrate)

Fig.4 Transmission of MIR-THz spectral splitter (two types of substrate).

 

The following NIR-THz and MIR-THz Spectral Splitters are available from stock:

No. Diameter Thickness, mm
mm inches
1 25.4 1.0 1.0
2 50.8 2.0 1.0

Please check Optics stock.
Custom designs are available upon request.
For price quotation and delivery please fill in our Request Form.